Interference judgment method for a relay adjacent node based on Hata open fading model

A relay node, node technology, applied in transmission monitoring, electrical components, power management, etc., to enhance communication, reduce interference, and reduce system risks

Pending Publication Date: 2021-06-11
NO 20 RES INST OF CHINA ELECTRONICS TECH GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current interference judgment method is mainly based on baseband digital signal processing. The interference judgment method involving the RF front-end and the Hataopen fading model often ignores the situation of the relay a

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  • Interference judgment method for a relay adjacent node based on Hata open fading model
  • Interference judgment method for a relay adjacent node based on Hata open fading model
  • Interference judgment method for a relay adjacent node based on Hata open fading model

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[0014] The invention provides an interference judgment method for relay adjacent nodes based on Hata open fading model. The core idea is based on the Hata open fading model, when the destination node enters the spatial spherical range centered on the relay node, calculate the signal fading amount and arrival power of the direct communication between the source node and the destination node, and then calculate the relay node to The signal fading amount and arrival power of the destination node, and use the arrival power to calculate the signal-to-interference ratio of the destination node. When the signal-to-interference ratio is less than the threshold, it is determined that the destination node has suffered direct interference from the source node, so that the system as a whole has no effect on the source node or the source node. The transmit power of the relay node is adjusted to reduce the interference to the destination node.

[0015] The technical scheme adopted in the pr...

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Abstract

The invention provides an interference judgment method for a relay adjacent node based on a Hata open fading model, which comprises the following steps of: based on the Hata open fading model, when a destination node enters a spatial spherical range taking a relay node as a center, calculating signal fading quantity and arrival power of direct communication from a source node to the destination node; and then calculating the signal fading amount and the arrival power from the relay node to the destination node, calculating the signal-to-interference ratio of the destination node by using the arrival power, and when the signal-to-interference ratio is smaller than a threshold value, judging that the destination node is directly interfered by the source node, so that the system integrally adjusts the transmitting power of the source node or the relay node, the interference to the destination node is weakened, the communication effect of the relay node is enhanced, and the system risk is reduced.

Description

technical field [0001] The invention relates to a method for calculating the fading amount of transmission power in a relay link path, and belongs to the related technical fields of mobile communication and digital signal processing. Background technique [0002] In order to build a three-node relay radio frequency signal transmission network system in the laboratory, when the destination node is close to the relay node, it is necessary to avoid direct communication or interference of the destination node by the source node, that is, it is necessary to determine in advance whether the destination node is interfered by the source node. However, the current interference judgment method is mainly based on baseband digital signal processing. The interference judgment method involving the RF front-end and the Hataopen fading model often ignores the situation of the relay adjacent nodes, and ideally handles the distance relationship between the relay node and the destination node. ...

Claims

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Application Information

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IPC IPC(8): H04B17/336H04B17/345H04B17/391H04W52/24H04W52/28
CPCH04B17/3911H04B17/336H04B17/345H04W52/241H04W52/243H04W52/283
Inventor 黄子甲文明王苏乐
Owner NO 20 RES INST OF CHINA ELECTRONICS TECH GRP
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